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Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value of Financial Instruments [Abstract]

The fair value of our long-term debt is estimated based upon quoted market prices at the reporting date for those financial instruments.

($ in thousands)	March 31, 2012		December 31, 2011
	Carrying		Carrying
	Amount	Fair Value	Amount	Fair Value

Long-term debt	$ 7,614,392	$ 7,720,171	$ 8,205,841	$ 7,958,873

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

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+ Details